drivers/gpu/drm/panfrost/panfrost_device.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright 2018 Marty E. Plummer <hanetzer@startmail.com> */
   3 /* Copyright 2019 Linaro, Ltd, Rob Herring <robh@kernel.org> */
   4
   5 #ifndef __PANFROST_DEVICE_H__
   6 #define __PANFROST_DEVICE_H__
   7
   8 #include <linux/spinlock.h>
   9 #include <drm/drm_device.h>
  10 #include <drm/drm_mm.h>
  11 #include <drm/gpu_scheduler.h>
  12
  13 struct panfrost_device;
  14 struct panfrost_mmu;
  15 struct panfrost_job_slot;
  16 struct panfrost_job;
  17 struct panfrost_perfcnt;
  18
  19 #define NUM_JOB_SLOTS 3
  20
  21 struct panfrost_features {
  22         u16 id;
  23         u16 revision;
  24
  25         u64 shader_present;
  26         u64 tiler_present;
  27         u64 l2_present;
  28         u64 stack_present;
  29         u32 as_present;
  30         u32 js_present;
  31
  32         u32 l2_features;
  33         u32 core_features;
  34         u32 tiler_features;
  35         u32 mem_features;
  36         u32 mmu_features;
  37         u32 thread_features;
  38         u32 max_threads;
  39         u32 thread_max_workgroup_sz;
  40         u32 thread_max_barrier_sz;
  41         u32 coherency_features;
  42         u32 texture_features[4];
  43         u32 js_features[16];
  44
  45         u32 nr_core_groups;
  46
  47         unsigned long hw_features[64 / BITS_PER_LONG];
  48         unsigned long hw_issues[64 / BITS_PER_LONG];
  49 };
  50
  51 struct panfrost_devfreq_slot {
  52         ktime_t busy_time;
  53         ktime_t idle_time;
  54         ktime_t time_last_update;
  55         bool busy;
  56 };
  57
  58 struct panfrost_device {
  59         struct device *dev;
  60         struct drm_device *ddev;
  61         struct platform_device *pdev;
  62
  63         spinlock_t hwaccess_lock;
  64
  65         struct drm_mm mm;
  66         spinlock_t mm_lock;
  67
  68         void __iomem *iomem;
  69         struct clk *clock;
  70         struct clk *bus_clock;
  71         struct regulator *regulator;
  72         struct reset_control *rstc;
  73
  74         struct panfrost_features features;
  75
  76         struct panfrost_mmu *mmu;
  77         struct panfrost_job_slot *js;
  78
  79         struct panfrost_job *jobs[NUM_JOB_SLOTS];
  80         struct list_head scheduled_jobs;
  81
  82         struct panfrost_perfcnt *perfcnt;
  83
  84         struct mutex sched_lock;
  85         struct mutex reset_lock;
  86
  87         struct {
  88                 struct devfreq *devfreq;
  89                 struct thermal_cooling_device *cooling;
  90                 unsigned long cur_freq;
  91                 unsigned long cur_volt;
  92                 struct panfrost_devfreq_slot slot[NUM_JOB_SLOTS];
  93         } devfreq;
  94 };
  95
  96 struct panfrost_file_priv {
  97         struct panfrost_device *pfdev;
  98
  99         struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
 100 };
 101
 102 static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
 103 {
 104         return ddev->dev_private;
 105 }
 106
 107 static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id)
 108 {
 109         s32 match_id = pfdev->features.id;
 110
 111         if (match_id & 0xf000)
 112                 match_id &= 0xf00f;
 113         return match_id - id;
 114 }
 115
 116 static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev)
 117 {
 118         return panfrost_model_cmp(pfdev, 0x1000) >= 0;
 119 }
 120
 121 static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
 122 {
 123         return !panfrost_model_cmp(pfdev, id);
 124 }
 125
 126 int panfrost_unstable_ioctl_check(void);
 127
 128 int panfrost_device_init(struct panfrost_device *pfdev);
 129 void panfrost_device_fini(struct panfrost_device *pfdev);
 130
 131 int panfrost_device_resume(struct device *dev);
 132 int panfrost_device_suspend(struct device *dev);
 133
 134 const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code);
 135
 136 #endif